Email diagnostic

Choose your symptom, sending route and recipients to get an ordered investigation path.

The email diagnostic

No account needed

QUESTION 01 / 03About a minute

What’s happening?

Choose the closest match. You can go back and change it.

It arrives in spamA recipient confirmed the wrong folder.It bounces or is rejectedYou receive an error or non-delivery report.It won’t sendMessages are queued, paused or restricted.It says delivered, but no repliesYou’re not sure people are seeing it.

Where do you send from?

Choose the app or service you use for the affected emails.

Microsoft 365 / OutlookGoogle Workspace / GmailBullhornJobAdderVincereLoxoAnother CRM or sending toolI’m not sure

Who is affected?

Different receiving systems can treat the same message differently.

Business mailboxesFor example, clients at their company domain.Personal email accountsFor example, Gmail, Yahoo or Outlook.com.A mix of bothCandidate and client emails are affected.I’m not sure yetThat’s a useful thing to find out.

Your next useful checks

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Need to see where a test message lands?

GlockApps can show placement in its test mailboxes. Use your actual sending route and read the results by provider. It cannot guarantee placement with your candidates or clients.

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Build an IT handoff

This interactive tool needs JavaScript. You can still use our spam-folder checklist or bounce guide without it.

A starting point, not a verdict.

This tool suggests an investigation path from your answers. It does not run DNS checks, send a test email or inspect your mailbox.

What happens to my answers?

They stay on this page. If you continue to the handoff builder, only your three category choices travel in the link. No message content is requested.

Already have a message header?

Use the header explainer →Understand inbox placement tests →

Inbox Field Guide

A clearer route to the inbox.
Practical guidance. Useful checks. No magic fixes.

For small B2B teams and recruitment agencies.

Find your next step

Email diagnostic Header explainer IT handoff builder Browse the field guide GlockApps for recruitment teams

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